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<a name="GProxyResolver"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="GProxyResolver.top_of_page"></a>GProxyResolver</span></h2>
<p>GProxyResolver — Asynchronous and cancellable network proxy resolver</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GProxyResolver.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="returnvalue">GProxyResolver</span></a> *
</td>
<td class="function_name">
<a class="link" href="GProxyResolver.html#g-proxy-resolver-get-default" title="g_proxy_resolver_get_default ()">g_proxy_resolver_get_default</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GProxyResolver.html#g-proxy-resolver-is-supported" title="g_proxy_resolver_is_supported ()">g_proxy_resolver_is_supported</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
</td>
<td class="function_name">
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup" title="g_proxy_resolver_lookup ()">g_proxy_resolver_lookup</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup-async" title="g_proxy_resolver_lookup_async ()">g_proxy_resolver_lookup_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
</td>
<td class="function_name">
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup-finish" title="g_proxy_resolver_lookup_finish ()">g_proxy_resolver_lookup_finish</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GProxyResolver.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GProxyResolver.html#GProxyResolver-struct" title="GProxyResolver">GProxyResolver</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GProxyResolver.html#GProxyResolverInterface" title="struct GProxyResolverInterface">GProxyResolverInterface</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GProxyResolver.html#G-PROXY-RESOLVER-EXTENSION-POINT-NAME:CAPS" title="G_PROXY_RESOLVER_EXTENSION_POINT_NAME">G_PROXY_RESOLVER_EXTENSION_POINT_NAME</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GProxyResolver.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="https://developer.gnome.org/gobject/unstable/GTypeModule.html">GInterface</a>
    <span class="lineart">╰──</span> GProxyResolver
</pre>
</div>
<div class="refsect1">
<a name="GProxyResolver.prerequisites"></a><h2>Prerequisites</h2>
<p>
GProxyResolver requires
 <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>.</p>
</div>
<div class="refsect1">
<a name="GProxyResolver.implementations"></a><h2>Known Implementations</h2>
<p>
GProxyResolver is implemented by
 <a class="link" href="GSimpleProxyResolver.html" title="GSimpleProxyResolver">GSimpleProxyResolver</a>.</p>
</div>
<div class="refsect1">
<a name="GProxyResolver.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gio/gio.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GProxyResolver.description"></a><h2>Description</h2>
<p><a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> provides synchronous and asynchronous network proxy
resolution. <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> is used within <a class="link" href="GSocketClient.html" title="GSocketClient"><span class="type">GSocketClient</span></a> through
the method <a class="link" href="GSocketConnectable.html#g-socket-connectable-proxy-enumerate" title="g_socket_connectable_proxy_enumerate ()"><code class="function">g_socket_connectable_proxy_enumerate()</code></a>.</p>
</div>
<div class="refsect1">
<a name="GProxyResolver.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="g-proxy-resolver-get-default"></a><h3>g_proxy_resolver_get_default ()</h3>
<pre class="programlisting"><a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="returnvalue">GProxyResolver</span></a> *
g_proxy_resolver_get_default (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Gets the default <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> for the system.</p>
<div class="refsect3">
<a name="id-1.4.16.3.10.2.5"></a><h4>Returns</h4>
<p> the default <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-proxy-resolver-is-supported"></a><h3>g_proxy_resolver_is_supported ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_proxy_resolver_is_supported (<em class="parameter"><code><a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> *resolver</code></em>);</pre>
<p>Checks if <em class="parameter"><code>resolver</code></em>
 can be used on this system. (This is used
internally; <a class="link" href="GProxyResolver.html#g-proxy-resolver-get-default" title="g_proxy_resolver_get_default ()"><code class="function">g_proxy_resolver_get_default()</code></a> will only return a proxy
resolver that returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for this method.)</p>
<div class="refsect3">
<a name="id-1.4.16.3.10.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>resolver</p></td>
<td class="parameter_description"><p>a <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.16.3.10.3.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>resolver</code></em>
is supported.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-proxy-resolver-lookup"></a><h3>g_proxy_resolver_lookup ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
g_proxy_resolver_lookup (<em class="parameter"><code><a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> *resolver</code></em>,
                         <em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
                         <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                         <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Looks into the system proxy configuration to determine what proxy,
if any, to use to connect to <em class="parameter"><code>uri</code></em>
. The returned proxy URIs are of
the form <code class="literal">&lt;protocol&gt;://[user[:password]@]host:port</code> or
<code class="literal">direct://</code>, where &lt;protocol&gt; could be http, rtsp, socks
or other proxying protocol.</p>
<p>If you don't know what network protocol is being used on the
socket, you should use <code class="literal">none</code> as the URI protocol.
In this case, the resolver might still return a generic proxy type
(such as SOCKS), but would not return protocol-specific proxy types
(such as http).</p>
<p><code class="literal">direct://</code> is used when no proxy is needed.
Direct connection should not be attempted unless it is part of the
returned array of proxies.</p>
<div class="refsect3">
<a name="id-1.4.16.3.10.4.7"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>resolver</p></td>
<td class="parameter_description"><p>a <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uri</p></td>
<td class="parameter_description"><p>a URI representing the destination to connect to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> a <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.16.3.10.4.8"></a><h4>Returns</h4>
<p> A
NULL-terminated array of proxy URIs. Must be freed
with <a href="https://developer.gnome.org/glib/unstable/glib-String-Utility-Functions.html#g-strfreev"><code class="function">g_strfreev()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-proxy-resolver-lookup-async"></a><h3>g_proxy_resolver_lookup_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_proxy_resolver_lookup_async (<em class="parameter"><code><a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> *resolver</code></em>,
                               <em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
                               <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                               <em class="parameter"><code><a class="link" href="GAsyncResult.html#GAsyncReadyCallback" title="GAsyncReadyCallback ()"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
                               <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Asynchronous lookup of proxy. See <a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup" title="g_proxy_resolver_lookup ()"><code class="function">g_proxy_resolver_lookup()</code></a> for more
details.</p>
<div class="refsect3">
<a name="id-1.4.16.3.10.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>resolver</p></td>
<td class="parameter_description"><p>a <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uri</p></td>
<td class="parameter_description"><p>a URI representing the destination to connect to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> a <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p> callback to call after resolution completes. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid until first called."><span class="acronym">scope async</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> data for <em class="parameter"><code>callback</code></em>
. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-proxy-resolver-lookup-finish"></a><h3>g_proxy_resolver_lookup_finish ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
g_proxy_resolver_lookup_finish (<em class="parameter"><code><a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a> *resolver</code></em>,
                                <em class="parameter"><code><a class="link" href="GAsyncResult.html" title="GAsyncResult"><span class="type">GAsyncResult</span></a> *result</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Call this function to obtain the array of proxy URIs when
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup-async" title="g_proxy_resolver_lookup_async ()"><code class="function">g_proxy_resolver_lookup_async()</code></a> is complete. See
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup" title="g_proxy_resolver_lookup ()"><code class="function">g_proxy_resolver_lookup()</code></a> for more details.</p>
<div class="refsect3">
<a name="id-1.4.16.3.10.6.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>resolver</p></td>
<td class="parameter_description"><p>a <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>result</p></td>
<td class="parameter_description"><p>the result passed to your <a class="link" href="GAsyncResult.html#GAsyncReadyCallback" title="GAsyncReadyCallback ()"><span class="type">GAsyncReadyCallback</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.4.16.3.10.6.6"></a><h4>Returns</h4>
<p> A
NULL-terminated array of proxy URIs. Must be freed
with <a href="https://developer.gnome.org/glib/unstable/glib-String-Utility-Functions.html#g-strfreev"><code class="function">g_strfreev()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
</div>
<div class="refsect1">
<a name="GProxyResolver.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GProxyResolver-struct"></a><h3>GProxyResolver</h3>
<pre class="programlisting">typedef struct _GProxyResolver GProxyResolver;</pre>
<p>A helper class to enumerate proxies base on URI.</p>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GProxyResolverInterface"></a><h3>struct GProxyResolverInterface</h3>
<pre class="programlisting">struct GProxyResolverInterface {
  GTypeInterface g_iface;

  /* Virtual Table */
  gboolean (* is_supported)  (GProxyResolver       *resolver);

  gchar ** (* lookup)        (GProxyResolver       *resolver,
			      const gchar          *uri,
			      GCancellable         *cancellable,
			      GError              **error);

  void     (* lookup_async)  (GProxyResolver       *resolver,
			      const gchar          *uri,
			      GCancellable         *cancellable,
			      GAsyncReadyCallback   callback,
			      gpointer              user_data);

  gchar ** (* lookup_finish) (GProxyResolver       *resolver,
			      GAsyncResult         *result,
			      GError              **error);
};
</pre>
<p>The virtual function table for <a class="link" href="GProxyResolver.html" title="GProxyResolver"><span class="type">GProxyResolver</span></a>.</p>
<div class="refsect3">
<a name="id-1.4.16.3.11.3.5"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
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<td class="struct_member_name"><p><a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GProxyResolverInterface.g-iface"></a>g_iface</code></em>;</p></td>
<td class="struct_member_description"><p>The parent interface.</p></td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GProxyResolverInterface.is-supported"></a>is_supported</code></em> ()</p></td>
<td class="struct_member_description"><p>the virtual function pointer for <a class="link" href="GProxyResolver.html#g-proxy-resolver-is-supported" title="g_proxy_resolver_is_supported ()"><code class="function">g_proxy_resolver_is_supported()</code></a></p></td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GProxyResolverInterface.lookup"></a>lookup</code></em> ()</p></td>
<td class="struct_member_description"><p>the virtual function pointer for <a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup" title="g_proxy_resolver_lookup ()"><code class="function">g_proxy_resolver_lookup()</code></a></p></td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GProxyResolverInterface.lookup-async"></a>lookup_async</code></em> ()</p></td>
<td class="struct_member_description"><p>the virtual function pointer for
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup-async" title="g_proxy_resolver_lookup_async ()"><code class="function">g_proxy_resolver_lookup_async()</code></a></p></td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GProxyResolverInterface.lookup-finish"></a>lookup_finish</code></em> ()</p></td>
<td class="struct_member_description"><p>the virtual function pointer for
<a class="link" href="GProxyResolver.html#g-proxy-resolver-lookup-finish" title="g_proxy_resolver_lookup_finish ()"><code class="function">g_proxy_resolver_lookup_finish()</code></a></p></td>
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<div class="refsect2">
<a name="G-PROXY-RESOLVER-EXTENSION-POINT-NAME:CAPS"></a><h3>G_PROXY_RESOLVER_EXTENSION_POINT_NAME</h3>
<pre class="programlisting">#define G_PROXY_RESOLVER_EXTENSION_POINT_NAME "gio-proxy-resolver"
</pre>
<p>Extension point for proxy resolving functionality.
See Extending GIO.</p>
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